Following confessions from the two arrested, Raihan Sikdar, 27, and Belal, police teams have been sent to Tekerhat and Mostafapur in Madaripur district, Trishal in Mymensingh district, Uttara in the capital and two places in Gopalganj district to nab their fellows, sources said.

Raihan hails from Mostafapur in Madaripur and Belal from Trishal in Mymensingh.

Recently extremists killed two policemen after abduction from Tekerhat area.

Raihan, a student of Zameya Rashidia Madrasa at Dakkhinkhan under Uttara in the capital, is now undergoing treatment for bullet wounds he received during fire exchange between police and extremists.

A revolver, a shutter gun and eight bullets were seized from the possessions of Raihan and Belal after their arrest while two other extremists fled away, police said.

Extremist activities have increased in Gopalganj and its adjacent areas in the recent time, BDNEWS Gopalganj correspondent reports.

Police arrested a number of suspected members of banned extremist organisation Harkat-ul-Zihad, and filed cases against its suspected leaders.